| ISYSAsp | The ISYSAsp object is used to gain access to the ISYS engine. It is the base object that is used when opening indexes to perform a search. |
| ISYSEngine | The ISYSAsp object is used to gain access to the ISYS engine when calling from a non-IIS environment. It is the base object that is used when opening indexes to perform a search. |
| ISYSIndex | ISYSIndex is used for executing searches, loading results from disk and fetching information about the index. |
| ISYSResultList | ISYSResultList contains a list of documents that match the search criteria. |
| ISYSDocument | ISYSDocument is used to access properties about each document in the result list. |
| ISYSIndexer | The ISYSIndexer object is used to request documents be added, removed or updated in the index. |
| ISYSDocumentDisplay | ISYSDocumentDisplay is used for presenting the document text, including hit highlighting, to the user. |
| ISYSCatalog | ISYSCatalog is used to enumerate the entries in the ISYS:desktop Catalog. |
| ISYSWordSearch | ISYSWordSearchEnum allows you to enumerate the results of ISYSIndex.FindWordMatch. |
| ISYSWordSearchItem | Contains the word information from FindWordMatch. |
| ISYSConceptNode | The ISYSConceptNode gives you access to the ISYS Concept Tree functionality. It presents you with a read-only view of a Concept Tree file (ISYS.SCT). |
| ISYSConceptFilter | The ISYSConceptFilter contains the information that is to be applied to a particular Concept Tree node. These values are read only and cannot be modified from within ISYSCOM.
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| ISYSIntelligentAgentManager | Intelligent Agents are mechanisms by which a user can subscribe to search results and be notified when any new data that matches their search criteria enters the index. The ISYSIntelligentAgentManager is used to create or maintain ISYSIntelligentAgent objects. |
| ISYSIntelligentAgent | The ISYSIntelligentAgent object is used to update or retrieve information about each user agent. This object allows you to fetch the result list object associated with an Intelligent Agent. |
| ISYSAnnotations | The ISYSAnnotations object contains a list of annotations associated with a given document. |
| ISYSAnnotation | The ISYSAnnotation object contains information about each annotation associated with a document. |
| ISYSSearch | The ISYSSearch object enables you to prepare ISYS requests. It can handle querying against different collections of data, include indexes, result list and concept nodes. |
| ISYSGroupList | Used to provided grouped result list. The groups are automatically calculated based on the sort order. |
| ISYSGroup | Contains information about the given group. |
| ISYSSearchTermList | Provides information about the search terms with in the result list. It can be used to customize the search term hit colors. |
| ISYSSearchTerm | Contains information about a search term and can be used to customize the color used to highlight the term. |
| ISYSRelatedList | Contains a list of documents related to the given document. Returned from the ISYSDocument.Related property. |
| ISYSFilter | The filter object is used on both the ISYSSearch and ISYSResultList object and is used to contain all available filter values. You need to specify one or more values to apply a filter. |
| ISYSFilterDate | Contains a date range used in the filter. |
| ISYSSearchSynonyms | Contains a dynamic list of synonyms to apply to this search. |
| ISYSCategoryList | Contains a list of categories that apply to the result list. |
| ISYSCategory | Contains information about a given category from the current ISYSResultList. |
| ISYSSearchStatList | Contains list of search term information relating to the search. |
| ISYSSearchStat | Contains details on each search term statistic. |
| ISYSSuggestionList | Contains alternative query suggestions based on the current result list. |
| ISYSSuggestion | Contains information about a search suggestion |
| ISYSMetadataList | Contains a list of metadata pertaining to the current document. |
| ISYSError | Returns extended error information as to why a result list failed to produce any results. |
| ISYSConfig | The ISYSConfig object allows you to control certain configuration options on a per-instance basis. |
| ISYSCatalogList | Contains a list of catalog items, representing the catalog of either ISYS:desktop or ISYS:web. |
| ISYSEntityList | Contains a list of entities for either a result list or document. |
| ISYSEntity | Represents an entity from either a result list or document |
| ISYSCatalogItem | Represents a catalog item from either ISYS:desktop or ISYS:web |
| ISYSImageCache | The ISYSImageCache is used to gain access to embeded images from RichHTML documents. It provides fast response as the result list does not need to be reloaded. |
| ISYSMetadataRefinement | Contains the parametric refinement options for the current result list. |
| ISYSMetadataRefinementItem | Contains the parametric refinement options for a particular metadata field. |
| ISYSMetadataRefinementItemValue | Represents a single value from a parametric refinement field. |
| ISYSQueryExpansion | Query expansion analyzes the first 50 documents in the result list to find expanded queries. |
| ISYSQueryExpansionItem | |
| ISYSServerStatus | Contains status information about the servers involved in this search. |
| ISYSIDB | Utility class that helps perform IDB_Function methods while streaming back ISYS engine messages. |
| ISYSClusterList | Contains a list of clusters. |
| ISYSCluster | Represents a single cluster in the cluster tree, you can use this node to gain access to the child clusters. |